Where to buy electronic (PDF) copies of standards: ISO, IEC, UL, ANSI, CSA, SEMI, EN
Last time I checked, there were still some EN standards that did not seem to be available in searchable-PDF form from any source. Try ANSI http://webstore.ansi.org/ansidocstore/find.asp? I think ANSI's EN collection is not complete. They do however sell all ISO and IEC standards, which in many cases are the same as the equivalent EN standard (see below). PS: My old notes below might be of interest, I compiled it a while back (last updated Apr 2001). URL's and site contents subject to change. (At least one of the Cenelec url's is not working today, but that is nothing new.) best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 Fax (847)562-0688 email ggars...@us.tuv.com http://www.us.tuv.com - Where to buy electronic (PDF) copies of standards: ISO, IEC, UL, ANSI, CSA, SEMI, EN - All IEC, all ISO, some ANSI and EN standards can be bought online from ANSI: http://webstore.ansi.org. Click on Standards Search Or, go direct to http://webstore.ansi.org/ansidocstore/find.asp HINT: try typing in just the number, without the letter prefix. In some cases it helps to omit the dash numbers (e.g. -5-4 too). IEC corrigenda (corrections to published standards): FREE downloads: http://www.iec.ch/catlg-e.htm Select the last option (corrigenda) on the search form. HINT: If you have problems opening a PDF file in your browser, try refresh. There were recently 271 corrigenda, incl. IEC 60204, IEC 60947-xx, IEC 60068-x, IEC 60950, IEC 61010, etc. IEC (alternative source): http://www.iec.ch/webstore Very easy, up-to-date, all IEC stds available. Give major credit card number, download Acrobat PDF. Most files are full-text searchable. Prices are very competitive (in Swiss Francs). Hint: Sign up for their Just Published email newsletter. ISO Buy from ANSI, see above. (ISO plan to sell downloads soon.) (ISO catalogue and some free background papers are online at: http://www.iso.ch/ ) ULBuy online at: http://www.comm-2000.com/ULmain.htm All UL stds available. (To check latest revision, etc., go to http://ulstandardsinfonet.ul.com/) SEMI Buy online: http://www.semi.org/standards Or, subscribe to CD (excellent value, IMHO !) CSA http://www.csa-intl.org Non-Canadians should click on US International Customers under the heading Catalogue. Or try this direct link: http:// www.csa-intl.org/onlinestore/getcatalogdrilldown.asp?Parent=0k=3l=1 Type the complete standard number, for example C22.2 No. 94 into the SEARCH box. Or browse the Sections, for example click Electrical/Electronic then click Industrial Devices, etc.) CAUTION: -You can buy English or French, hardcopy, CDROM or PDF editions of most CSA standards, on the same website. Be sure to order the PDF version, in English, if that is what you want. -CSA stds are often quoted thus, C22.2-94. But you must search using format C22.2 No. 94, with spaces. -If you type a partial reference for a large multi-part standard, say C22.2 into the SEARCH box, you will see a maximum of 50 parts listed. NFPA http://catalog.nfpa.org/ National Fire Protection Association (USA). ANSI/NFPA 70: National Electrical Code (NEC); ANSI/NFPA 79, etc. EN Not so easy. The standards are issued, but not sold, by Cenelec, http://www.cenelec.org/ then republished by the National standards bodies in each EU country: BSI, SS, DIN etc. Sometimes they are translated into the respective national language. Option 1: Most EN standards are similar (sometimes identical) to an equivalent IEC or ISO standard. (Example: EN 60204-1 is almost the same as IEC 60204-1.) So, it is often easier sometimes cheaper to buy the IEC edition, see above (http://www.iec.ch). To research equivalence, look at a hardcopy, or an old edition, or go to http://www.cenelec.org/ then click on Standardisation Activities (CENELEC has a useful, but s-l-o-w site!) Or, http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist.html (Click on the relevant Directive: EMC, Low-voltage, Machinery, etc. In some cases, an IEC or ISO document is listed next to the EN number.) Option 2: Many of the EN standards published in Sweden, prefixed SS EN, are actually published in English. I have bought SS EN's from both ANSI SIS, all were in English apart from the cover page. (Some have both the English and Swedish pages.) You can buy from ANSI or SIS. Presumably, the SS EN's that ANSI resells are all in English, but you might want to call to check. The SIS site lists a language code for each standard. -ANSI:
Re: Safety Symbol
Probably will get a deluge of replies, but in case not, I think you are looking for symbol 5041 in IEC 60417. (Three wiggly lines [S-shaped] suspended above a horizontal line, all surrounded be the usual warning triangle.) (Also referenced in IEC 61010-1.) best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 Cell (847)612-1574 Fax (847)562-0688 email ggars...@us.tuv.com http://www.us.tuv.com Cereceres, David dcerece...@pelco.comTo: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Sent by: cc: owner-emc-pstc@majordom Subject: Safety Symbol o.ieee.org 09/25/2002 18:13 Please respond to Cereceres, David Hello Group, Does anyone know if there is a specific symbol for hot surfaces? I looked in IEC 417, but have been unable to locate anything specific. Thanks, David Cereceres Pelco --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: Online Standards EN61010-1
As noted, in _this_ case the EN IEC are identical. GENERAL HINTS: 1. You might check the Swedish (SS EN) edition, this is usually bilingual (or sometimes English only) and (usually?) searchable. No guarantees. http://www.sisforlag.se/english/default_eng.htm 2. Might also try ANSI , if you didn't already. (They seem to get some of their EN's from SIS?) http://webstore.ansi.org/ansidocstore/find.asp) 3. You might be able to research equivalence (don't expect much detail) at : http://www.cenelec.org/ then click on Standardisation Activities (a useful, but s-l-o-w site!) 4. The EU's lists of LVD EMC harm stds... http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist/lvd.html http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist/emc.html ...have a column Reference Document. This often lists the equivalent IEC stds, with or without the magic word modified. (I don't know if this indicator is 100% complete accurate.) 5. The Machinery list has no such column, but occasionally mentions ISO equivalency in the title field. http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist/machines.html (The first 3 links above are old bookmarks, not verified recently.) best regards, glyn TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Tel (847)562-9888 ext 25 email ggars...@us.tuv.com http://www.us.tuv.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: unit and prefix capitalization
FYI, for anyone planning to export using US Customary Units, I believe the three officially non-metric countries mentioned in an earlier posting are: USA, Liberia and Myanmar (Burma). For anyone interested in more resources (or history), I looked into US Metrication a while back, these are the links I found: INTERNATIONAL: Bureau International des Poids et Mesures [Weights Measures] (BIPM): http://www.bipm.fr/ Official SI Brochure: http://www.bipm.fr/pdf/si-brochure.pdf US-ORIENTED: Federal Register notice: Metric System of Measurement: Interpretation of SI Units for United States http://physics.nist.gov/Document/SIFedReg.pdf NIST Metric Program: http://ts.nist.gov/ts/htdocs/200/202/mpo_home.htm (includes links to official publications, conversion software, resources, history, etc.) US Metric Association http://www.metric.org/ Editorial cartoons (re. NASA debacle): http://www.ucomics.com/tonyauth/1999/10/03/ http://www.ucomics.com/tomtoles/1999/10/04/ Proposal for decimal-based measurement system for USA (Thomas Jefferson, 1790) http://ourworld.compuserve.com/homepages/Gene_Nygaard/t_jeff.htm Metric Act of 1866 (Public Law 39-183): Act of Congress (HR 596), permitting use of the metric system in the United States http://media.nara.gov/media/images/28/21/28-2083a.jpg It shall be lawful throughout the United States of America to employ the weights and measures of the metric system; and no contract or dealing, or pleading in any court, shall be deemed invalid or liable to objection because the weights or measures expressed or referred to therein are weights or measures of the metric system. -15 USC Sec. 204 http://media.nara.gov/media/images/28/21/28-2084a.jpg The tables in the schedule annexed shall be recognized in the construction of contracts and in all legal proceedings as establishing, in terms of the weights and measures on June 22, 1874, in use in the United States, the equivalents of the weights and measures expressed therein in terms of the metric system; and the tables may lawfully be used for computing, determining, and expressing in customary weights and measures the weights and measures of the metric system. [...] -15 USC Sec. 205 http://uscode.house.gov/usc.htm (Specify Title 15, Section 205) On April 5, 1893, Thomas Corwin Mendenhall, Superintendent of Weights and Measures, with the approval of the Secretary of the Treasury, decided that the International Meter and Kilogram would in the future be regarded as the fundamental standards of length and mass in the United States, both for metric and customary weights and measures. http://museum.nist.gov/exhibits/ex1/room4.html Legislation concerning the adoption of the metric system of weights and measures has been the subject of petitions and memorials over many years (43A-H3.2, 48A-H5.1, 54A-H6.1, 57A- H3.1, 59A-H5.1). The records of the 54th Congress (1895-97), for instance, contain petitions urging passage of a bill to adopt the metric system, H.R. 2758, from citizens from many cities and from pharmaceutical and engineering groups. The legislation was opposed by members of the Master Car Builders Association and the builders of certain railroad cars (54A-H6.1). [Source: Guide to the Records of the U.S. House of Representatives at the National Archives, 1789-1989, http://www.archives.gov/records_of_congress/house_guide/chapter_05.html] best regards, glyn Glyn R. Garside --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: Japan mains voltage
Standards aside, one other practical point to consider (all countries), the +/- 10% (or whatever) that may be quoted by (or required of) the utility company applies only to the point at which they deliver to their customer. There will then be an additional volt-drop within the customer's installation, from the utility supply point to the equipment connection. In a large industrial facility (factory), this may be significant. The volt-drop might tend to be higher in 100V than 230V systems. Also, in many cases, the utility will be providing supply to a building or an entire factory site, at MV voltages, and the customer will be responsible for transforming to 100V (or 110/115/120/230/240V, etc.), and they will usually be free to decide whether they want to bother keeping to the +/- 10% range or not. best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 mailto:ggars...@us.tuv.com http://www.us.tuv.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: SIL Ratings
See also my posting on 21 Dec 2001, giving a link to the IEC FAQ: http://www.iec.ch/61508/ EXTRACT: What is meant by a SILn system, subsystem or component? A safety integrity level (SIL) is not the property of a system, subsystem or component. However, the above phrase is often used to denote that the system, subsystem or component is capable of providing safety functions with a safety integrity level up to n. [end of quote] It is indeed appropriate to evaluate the safety function(s) of a PLC (or other electronic sub-assembly of a safety-related system) to determine their SIL rating. This facilitates their selection and integration into a complete safety system. Of course, a standard PLC is not suitable for a safety application. To achieve the SIL rating you need to meet specific requirements for failure rate, architecture, and (most especially) diagnostic coverage. In practice, a safety PLC will almost certainly be either dual- or triple-redundant. Also, IEC 61508 takes a life-cycle approach, so it is supposed to be considered at the design stage of the PLC. (If you have good design and production control processes, you may be able to assess compliance retrospectively.) You may also be interested in an FAQ that I wrote a while back. [Disclaimer: has a small amount of commercial content.] http://www.tuvasi.com/faq-fs.htm See http://www.tuv-fs.com/plclist.htm for some certified examples. [Disclaimer: This is on a website operated jointly by two test agencies]. As to what standard your enquirer referred to, the answer probably depends on the industry and the region: -IEC 61508 is international and generic (all industries). Published in 7 parts, total 700 pages approx. -ANSI/ISA-84.01-1996 Application of Safety Instrumented Systems for the Process Industries is for the (USA/Canada) PROCESS industry. It was published in 1996 when IEC 61508 was still at draft stage. -EN 61508 is identical to IEC 61508 -A process-industry-specific functional-safety standard is at draft stage, IEC 61511 -A machinery-industry-specific functional-safety standard is at draft stage, IEC 62061 (The sector-specific standards will apply the relevant principles and methods of IEC 61508 to a specific industry.) -Some other key differences: -ANSI/ISA S84.01 uses only three SIL levels (SIL 1 to 3) -IEC 61508 uses all four SIL levels (1 to 4) -S84.01 does not address the complete product life-cycle, from design to decommissioning, IEC 61508 does. -For a complete analysis, see clause 12 of S84.01. (Clause 12 was written in 1996, hence is somewhat out-of-date.) Per ISA: This standard [S84.01] is process industry specific within the framework of the International Electrotechnical Commission (IEC) draft Publication 1508. There are significant differences in S84.01 from IEC draft Publication 1508-1995, as described in Clause 12. However, IEC draft Publication 1508 was still being developed at the time that S84.01 was published. As a result, ISA SP84 will continue to support and monitor IEC draft Publication 1508 development, and will modify S84.01 as needed when IEC draft Publication 1508 is published. Per IEC: The standard [IEC 61508] is generic and can be used directly by industry (as a 'standalone' standard) and also by international standards organisations as a basis for the development of sector standards (e.g. for the machinery sector, for the process sector or for the nuclear sector). The standard will therefore influence the development of electrical, electronic and programmable electronic (E/E/PE) safety-related systems across all sectors. best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 email ggars...@us.tuv.com http://www.us.tuv.com Dan Kinney (A) dan.kin...@heapg.comTo: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Sent by: cc: owner-emc-pstc@majordom Subject: SIL Ratings o.ieee.org
RE: A very nice game
Some thoughts. Assuming that this was a virus, the warning could be helpful to some. While I agree with Robert comments in part, in fact a lot of the viruses that exploit weaknesses in Microsoft Outlook use the sender's address book. So you WILL get viruses from people you know or correspond with (as in this case?). I think at least one virus read the sender's Inbox, so you could even get a reply to a message you had sent. (This file is in reply to your message?). PS: Even in this forum, which usually has useful subjects, we have had subjects such as: Decisions/choices Back to basics An old chestnut etc. best regards, glyn --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: LED Color
Depends a lot on the application, region and where on the equipment. For example, for machinery, if the LEDs are part of the operator interface or machine-mounted control device, both EN 60204-1 (IEC 60204-1) and ANSI/NFPA 79 have specific requirements for INDICATOR LIGHTS in general (not specific to LEDs). (As always, the two standards [US/EU] are similar, but not exactly the same.) Note that red is supposed to be used only for emergency. Normal operation should _not_ be an emergency. Machine stopped is usually also a safe condition, not an emergency. For example, EN (and IEC) 60204-1: (IMPORTANT: See section 10.3.2 for exceptions and additional requirements.) Colour Meaning Explanation Action by operator --- --- --- RED Emergency Hazardous condition Immediate action to deal with hazardous condition (e.g. by operating E-stop) YELLOW AbnormalAbnormal condition; Monitoring and/or intervention (e.g. by Impending critical condition re-establishing the intended function) GREEN Normal Normal condition Optional BLUEMandatory Indication of a condition that Mandatory action requires action by operator WHITE Neutral Other conditions; may be usedMonitoring whenever doubt exists about use of RED,YELLOW,GREEN,BLUE If the LEDs were inside the machine, only visible to a service technician, you might consider that they were not operator interface. Other sectors/products/regions will have different requirements, let's see what we can collect via this listserver. best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 Cell (847)612-1574 Fax (847)562-0688 email ggars...@us.tuv.com http://www.us.tuv.com Luiz Claudio Bonilla de AraujoTo: emc-p...@majordomo.ieee.org luizboni...@ig.com.br cc: luiz_c_boni...@multibras.com.br Sent by: Subject: LED Color owner-emc-pstc@majordom o.ieee.org 03/21/2002 15:08 Please respond to Luiz Claudio Bonilla de Araujo Does anybody know any standard or guideline regarding the colors used in LED displays? Usual applications commonly apply green for ON and red for OFF, but I would like to know if there is any national / international standard that specifies the LED color according to the function that it is informing to the user (eg. alarm, continuous operation, high/low speed, etc.) --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy
RE: CE - the abbreviation
This is old news, and of no real consequence. Only for those that like to compile lists: I just realized that in addition to all the others (caveat emptor, conducted-emissions, [Windows] CE, conformité européenne, etc.) there is now yet another, somewhat obscure, usage of the letters C E (this one seems to have an all important s p a c e separating the two letters: OJ C E!). Of course, the OJ C E is _not_ the portion of the OJ dealing with CE marking (that would be too easy!). EXTRACT FROM: http://europa.eu.int/eur-lex/en/help-about.html#OJCEnotice quote The Official Journal, published daily in 11 languages, consists of two related series, the L series (Legislation) and the C series (Information, notices and preparatory EU legislation), a supplement and an annex. EUR-Lex [ http://europa.eu.int/eur-lex/en/oj/index.html ] provides free access to the C and L series of the Official Journal for a period of 45 days following publication (after which they can be found on the monthly CD-ROM). The EU Institutions have decided to add an exclusively electronic section to the Official Journal C Series, known as the OJ C E. Documents published in the OJ C E will ONLY be published electronically. From now on, the OJ C E, structured as the current OJ C, will appear in the 11 official languages on the EUR-Lex site (http://europa.eu.int/eur-lex) under the Official Journal heading, where texts are currently available for 45 days. The full OJ C E texts will also be available on the OJ LC monthly CD-ROM, and in the Celex database. Some documents previously published in the OJ C may be transferred to the OJ C E. An index of all documents published in a given OJ C E will be printed in the paper edition of the OJ C of the same day. As is presently the case with the Annexes to the OJ C, the two OJs will bear the same number (e.g. the OJ C195 on paper will correspond to the electronic OJ C 195 E). The frequency of publication of the OJ C E series will depend on the frequency and volume of documents sent for publication by the EU Institutions. end of quote So now that's clear!! best regards, glyn -- TUV Rheinland of North America, Inc. Product Safety Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 Cell (847)612-1574 Fax (847)562-0688 email ggars...@us.tuv.com http://www.us.tuv.com _ The information included in this e-mail is intended only for the person or entity to which it is addressed. Any use of this information by persons or entities other than the intended recipient is prohibited. If you receive this transmission in error, please delete this email and destroy any copies of it. Any opinions expressed in this email are those of the individual and not necessarily those of TUV Rheinland of North America, Inc. _ --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Official IEC FAQ for IEC 61508 (Functional safety of E/E/PE SRS)
I thought some PSTC subscribers (especially any involved in safety systems that depend at least in part on software or electronics) might be interested in this. The IEC has recently (Dec 2001?) posted an FAQ for IEC 61508, Functional safety of electrical/electronic/programmable electronic safety-related systems. http://www.iec.ch/61508/ It is not a substitute for the standard (which has seven parts, total about 500 pages). The FAQ is only about 18 pages. Much better to browse the hyperlinked FAQ, but I have pasted a few quotes below anyway. best regards, glyn PS: Season's Greetings to you all. Glyn R. Garside TUV Rheinland of North America, Inc. (Chicago Office) 1945 Techny Rd, Unit 4, NORTHBROOK, IL 60062-5357, USA http://www.us.tuv.com TEL +1-847-562-9888 ext 25 Nationally Recognized Test Laboratory -- ANSI, UL -- CSA, SEMI EU Notified Competent Body -- CE, EN -- ISO, IEC, CB-scheme Safety, EMC, Machinery, Pressure, Quality, Ergonomics, Automotive, Medical, Telecom. - [Extracts from http://www.iec.ch/61508/ ] This document answers some Frequently Asked Questions (FAQs) about the international standard IEC 61508, Functional safety of electrical/electronic/programmable electronic safety-related systems. It has been compiled by SC65A/WG14 in collaboration with SC65A/MT12 and SC65A/MT13, the international committees responsible for the maintainance of IEC 61508. The answers to the questions are not intended to provide a definitive technical answer but rather to inform the new user to the standard. IEC 61508 sets out a generic approach for all safety lifecycle activities for systems comprised of electrical and/or electronic and/or programmable electronic (E/E/PE) components that are used to perform safety functions. The seven part standard considers all relevant overall, E/E/PE system and software safety lifecycle phases (for example, from initial concept, through design, implementation, operation and maintenance to decommissioning). This unified approach has been adopted in order that a rational and consistent technical policy be developed for all electrically-based safety-related systems. A1) What systems does IEC 61508 cover? IEC 61508 applies to safety-related systems when one or more of such systems incorporate electrical and/or electronic and/or programmable electronic (E/E/PE) devices. It covers possible hazards caused by failure of the safety functions to be performed by the E/E/PE safety-related systems, as distinct from hazards arising from the E/E/PE equipment itself (for example electric shock etc). It is generically based and applicable to all E/E/PE safety-related systems irrespective of the application. It is recognized that the consequences of failure could also have serious economic implications and in such cases the standard could be used to specify any E/E/PE safety-related system used for the protection of equipment or product. The scope of IEC 61508-1 gives more details. B4) What is a basic safety publication? Parts 1, 2, 3 and 4 of IEC 61508 are designated as IEC basic safety publications. This means that IEC Technical Committees will have to use these parts in the preparation of each of their own sector standards that has E/E/PE safety-related systems within its scope. IEC 61508 will therefore have far reaching implications across all IEC application sectors. Note that basic safety publication status does not apply in the context of low complexity E/E/PE safety-related systems or where the required safety integrity of the E/E/PE system is less than the lowest safety integrity level in IEC 61508. D3) What is a low complexity E/E/PE safety-related system? This is defined in 3.4.4 of IEC 61508-4 as an E/E/PE safety-related system, in which the failure modes of each individual component are well defined and the behaviour of the system under fault conditions can be completely determined. An example is a system comprising one or more limit switches, operating one or more contactors to de-energize an electric motor, possibly via interposing electromechanical relays. SOURCE: This material may be freely reproduced, except for advertising, endorsement or commercial purposes. The International Electrotechnical Commission (IEC) must be acknowledged as the source. All such extracts are copyright of IEC, Geneva, Switzerland. All rights reserved. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to:
RE: What happened to the IEC60417 symbol library?
Surely IEC 60417-1 and ..617 are different standards? The former is Graphical Symbols for use on EQUIPMENT... (my emphasis). Whereas: IEC 60617-1GRAPHICAL SYMBOLS FOR DIAGRAMS [about 13 parts, -1 to -13] IEC 60617-1same title (Still interesting, I'd missed that announcement about IEC 60617.) By the way, if you do buy (PDF available from ANSI or IEC) IEC 60417, part 1 is now all you need to browse the thumbnail images, descriptions, etc. Part 2 (IEC 60417-1) has the full-size images for reproduction purposes. While I have my index open, some other possibly relevant documents: ISO 3864 Safety Colours and Safety Signs ISO 7000 Graphical Symbols for use on Equipment. EN 61310-1 SAFETY OF MACHINERY - INDICATION, MARKING AND ACTUATION - REQUIREMENTS FOR VISUAL, AUDITORY AND TACTILE SIGNALS [symbols for operation, prohibition, warning, mandatory, escape, fire fighting] EN 61310-2 [...]-REQUIREMENTS FOR MARKING [symbols for: Ground(earth), ac, dc, +, -, class II, III, !, dangerous voltage] 92/58/EEC MINIMUM REQUIREMENTS FOR THE PROVISION OF SAFETY AND/OR HEALTH SIGNS AT WORK ANSI Z535.1SAFETY COLOR CODE ANSI Z535.2 ENVIRONMENTAL AND FACILITY SAFETY SIGNS ANSI Z535.3 CRITERIA FOR SAFETY SYMBOLS ANSI Z535.4PRODUCT SAFETY SIGNS AND LABELS ANSI Z535.5 ACCIDENT PREVENTION TAGS PS: I don't have an answer to the original question. (I always assumed the w3.hike.te.chiba-u.ac.jp site was an unofficial [and useful] resource; it did not appear to be an official IEC site (although, a Prof. Ikeda is listed in the IEC committee documents).) Maybe the site is just temporarily down? However, Google also lists other sites, such as: http://www.geda.seul.org/symlibrary/IEC417/small.html http://www.geda.coelacanth.com/symlibrary/IEC417/small.html [mirror] best regards, glyn Glyn R. Garside TUV Rheinland of North America, Inc. (Chicago Office) http://www.us.tuv.com TEL 847-562-9888 ext 25 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: 24 Mo. Warranty for the EU
I'm just guessing, but one detail that may have impeded your search (assuming you were searching in English, not German, French, etc.) is that in UK English, warranty/warranties is/are _usually_ called Guarantee/Guarantees. It is a good general point to bear in mind when searching EU and other non-US websites (also indexes and catalogs [catalogues] of printed literature, etc.) it may help to use the British spelling /or vocabulary -- Colour vs. color, Earth vs. ground, Lift vs. elevator, tap vs. faucet, tyre vs. tire, etc. In some cases, the US word is only *sometimes* used or has different nuances of meaning, or variances of the plural form: lorry/commercial vehicle/truck vs. truck, aerial [popular term]/antenna/antennae vs. antenna/antennas, etc.). Or you could search in German, French or another EU language. Web Resources: Eurodicautom: http://europa.eu.int/eurodicautom/login.jsp (formerly http://eurodic.ip.lu, see also http://europa.eu.int/comm/translation/en/index.html and http://europa.eu.int/comm/translation/events/2001_eurodicautom/edic_en.htm ) Consilium: http://tis.consilium.eu.int Oxford English Dictionary: http://www.oed.com/ [via subscription] Yahoo UK: http://uk.dir.yahoo.com/reference/dictionaries/american_british_and_british_american/ (includes some fun links on this subject) best regards, glyn Glyn R. Garside Senior Engineer, Industrial Machinery Division TUV Rheinland of North America, Inc. (Chicago Office) 1945 Techny Rd, Unit 4, NORTHBROOK, IL 60062-5357, USA http://www.us.tuv.com TEL 847-562-9888 ext 25 FAX 847-562-0688 MOBILE 847-612-1574 Nationally Recognized Test Laboratory -- ANSI, UL -- CSA, SEMI EU Notified Competent Body -- CE, EN -- ISO, IEC, CB-scheme Safety, EMC, Machinery, Pressure, Quality, Ergonomics, Automotive, Medical, Telecom. Veit, Andy andy.v...@mts.com To: 'EMC-PSTC Internet Forum' emc-p...@majordomo.ieee.org Sent by: cc: owner-emc-pstc@majordom Subject: 24 Mo. Warranty for the EU o.ieee.org 11/29/2001 15:38 Please respond to Veit, Andy Forum- I was just informed (without any further details given) that warranty periods for products shipped to Europe going to 24 months, mandated by law. Does someone know the specifics of this, or maybe point me in the right direction? I started digging on the europa.eu.int website, but have not found anything yet. Thanks- -Andy Andrew Veit --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: purchasing IEC standards
Stuart, I think you were asking about bulk-quantity discounts. I have bought single-copies from the IEC website (needs a credit card): www.iec.ch. You might find some info on the same site, apologies if you tried already. If you only want IEC _EMC_ standards, I think they have a package of those, used to be on CD-ROM and was quite a good deal. I also attach a list I sent out a while back, probably not completely up to date (last updated in April). Where to buy electronic (PDF) copies of standards: ISO, IEC, UL, ANSI, CSA, SEMI, EN best regards, glyn Glyn R. Garside (mailto:ggars...@us.tuv.com) Senior Engineer, Industrial Machinery Division TUV Rheinland of North America, Inc. (Chicago Office) 1945 Techny Rd, Unit 4, NORTHBROOK, IL 60062-5357, USA http://www.us.tuv.com Text: mailto:8476121...@mobile.att.net TEL 847-562-9888 ext 25 FAX 847-562-0688 MOBILE 847-612-1574 Nationally Recognized Test Laboratory -- ANSI, UL, CSA, SEMI EU Notified Competent Body -- CE, EN, IEC, ISO, CB-scheme Safety, EMC, Machinery, Pressure, Quality, Ergonomics, Automotive, Medical, Telecom. Where to buy electronic (PDF) copies of standards: ISO, IEC, UL, ANSI, CSA, SEMI, EN FYI: This might be of interest, I have been compiling it for a while (last updated Apr 2001). See also s.e.e.c FAQ Sources of EMC Safety Compliance Information: http://users.metro2000.net/~purwinc/compliance_faq.html - Where to buy electronic (PDF) copies of standards: ISO, IEC, UL, ANSI, CSA, SEMI, EN - All IEC, all ISO, some ANSI and EN standards can be bought online from ANSI: http://webstore.ansi.org. Click on Standards Search Or, go direct to http://webstore.ansi.org/ansidocstore/find.asp HINT: try typing in just the number, without the letter prefix. In some cases it helps to omit the dash numbers (e.g. -5-4 too). IEC corrigenda (corrections to published standards): FREE downloads: http://www.iec.ch/catlg-e.htm Select the last option (corrigenda) on the search form. HINT: If you have problems opening a PDF file in your browser, try refresh. There were recently 271 corrigenda, incl. IEC 60204, IEC 60947-xx, IEC 60068-x, IEC 60950, IEC 61010, etc. IEC (alternative source): http://www.iec.ch/webstore Very easy, up-to-date, all IEC stds available. Give major credit card number, download Acrobat PDF. Most files are full-text searchable. Prices are very competitive (in Swiss Francs). ISO Buy from ANSI, see above. (ISO plan to sell downloads soon.) (ISO catalogue and some free background papers are online at: http://www.iso.ch/ ) UL Buy online at: http://www.comm-2000.com/ULmain.htm All UL stds available. (To check latest revision, etc., go to http://ulstandardsinfonet.ul.com/) SEMI Buy online: http://www.semi.org/standards Or, subscribe to CD (excellent value, IMHO !) CSA http://www.csa-intl.org Non-Canadians should click on US International Customers under the heading Catalogue. Or try this direct link: http:// www.csa-intl.org/onlinestore/getcatalogdrilldown.asp?Parent=0k=3l=1 Type the complete standard number, for example C22.2 No. 94 into the SEARCH box. Or browse the Sections, for example click Electrical/Electronic then click Industrial Devices, etc.) CAUTION: -You can buy English or French, hardcopy, CDROM or PDF editions of most CSA standards, on the same website. Be sure to order the PDF version, in English, if that is what you want. -CSA stds are often quoted thus, C22.2-94. But you must search using format C22.2 No. 94, with spaces. -If you type a partial reference for a large multi-part standard, say C22.2 into the SEARCH box, you will see a maximum of 50 parts listed. NFPA http://catalog.nfpa.org/ National Fire Protection Association (USA). ANSI/NFPA 70: National Electrical Code (NEC); ANSI/NFPA 79, etc. EN Not so easy. The standards are issued, but not sold, by Cenelec, http://www.cenelec.org/ then republished by the National standards bodies in each EU country: BSI, SS, DIN etc. Sometimes they are translated into the respective national language. Option 1: Most EN standards are similar (sometimes identical) to an equivalent IEC or ISO standard. (Example: EN 60204-1 is almost the same as IEC 60204-1.) So, it is often easier sometimes cheaper to buy the IEC edition, see above (http://www.iec.ch). To research equivalence, look at a hardcopy, or an old edition, or go to http://www.cenelec.org/ then click on Standardisation Activities (CENELEC has a useful, but s-l-o-w site!) Or, http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist.html (Click on the relevant Directive: EMC, Low-voltage, Machinery, etc. In some cases, an IEC or ISO document is listed next to the EN number.) Option 2: Many of the EN standards
RE: Odd CE Marking Question
I suppose if there were a Directive for Decorative Items, (DDI), ugly products would be exempt? For example, certain stylish computers (I have a certain brand or two in mind!) might fall in the scope of LVD, EMC, and DDI, whereas a typical beige-brick PC, being merely functional would only have to consider LVD EMC requirements? Further, I imagine that efforts to harmonize European and North American ideas of styling to produce a common definition of decorative could take years: ...Exception 7: Extensive usage of CHROME shall be considered 'decorative' in the following country/ies: ... ...Exception 23: Wristwatches, and similar consumer products, consisting of black indicator-hands and black letters on a black background, mounted in a black case and furnished with a black wrist strap, shall be considered 'decorative products' in the following countries/economic areas: ... Oh well, back to work... -Glyn (in a private capacity as usual...) --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: Final EMC Testing In-House
Do any product standards actually set limits for immunity to supply frequency variations? One that comes to mind (specific to Programmable Controllers [ aka PLC's]) is EN 61131-2 (IEC 61131-2). 6.3.7.1.1 (table 47) requires (inter alia ) testing incoming power AC frequency from 0.95 to 1.05 of the nominal. (As you may expect, the requirement is that the EUT must function properly both during and after the tests.) best regards, glyn Glyn R. Garside Notice: This message is confidential and intended for the use of the intended recipient(s) only. If this e-mail was sent to you in error please notify the originator at the address above delete the message without reading its contents. John Woodgate j...@jmwa.demTo: Chris Chileshe chris.chile...@ultronics.co.uk on.co.ukcc: 'marti...@appliedbiosystems.com' Sent by: marti...@appliedbiosystems.com, 'emc-p...@majordomo.ieee.org' owner-emc-pstemc-p...@majordomo.ieee.org c...@ieee.org Subject: Re: Final EMC Testing In-House 02/23/2001 05:00 Please respond to John Woodgate 01c09d74.1acbb9a0.chris.chile...@ultronics.co.uk, Chris Chileshe chris.chile...@ultronics.co.uk wrote: If 1), then I believe you have covered all the tests, assuming supply frequency variations are captured in Voltage fluctuations. Do any product standards actually set limits for immunity to supply frequency variations? --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: Label Symbols?
According to EN 61010-1 (test equipment), which uses it, exclamation point in a triangle is symbol B.3.1, Caution (refer to accompanying documents), from ISO 3864: SAFETY COLOUR AND SAFETY SIGNS. FYI, same source (EN61010) also lists, among others: Caution, risk of electric shock (lightning bolt in triangle), symbol B.3.6, also from ISO 3864. Caution, hot surface (3 vertical wavy lines above a horizontal line), symbol 5041, from IEC [60]417. Note that IEC 417 was renumbered to IEC 60417, then superseded by: IEC 60417-1 GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - PART 1: OVERVIEW AND APPLICATION and IEC 60417-2 GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - SYMBOL ORIGINALS Another source of symbols _may_ be IEC 60617-2, GRAPHICAL SYMBOLS FOR DIAGRAMS - SYMBOL ELEMENTS, QUALIFYING SYMBOLS AND OTHER SYMBOLS HAVING GENERAL APPLICATION. (Despite the title, EN 61010-1 suggests that the 3~ symbol [# 02-02-06] may be useful on rating label of 3-phase equipment.) Glyn R. Garside Senior Engineer, Industrial Machinery Division TUV Rheinland of North America, Inc. (Chicago Office) 1945 Techny Rd, Unit 4, NORTHBROOK, IL 60062-5357, USA http://www.us.tuv.com TEL 847-562-9888 ext 25 Comments are personal, not corporate / EOE / batteries not included / some assembly required / etc. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
